There is no definitive answer to this question as it depends on a number of factors, including the type of muzzle brake, the rifle and ammunition being used, and the shooter’s individual shooting style. That said, muzzle brakes can affect accuracy in both positive and negative ways.
On the positive side, muzzle brakes can help to reduce recoil which can make it easier for the shooter to keep their sights on the target during rapid fire. Additionally, some shooters find that the extra weight at the end of their barrel helps to stabilize their aim.
Reducing felt recoil also has a number of benefits for the shooter. It may assist to decrease tiredness, especially during a big event when a lot of shots are fired, as well as lower the risk of physical issues such as brachial plexus injuries and psychological difficulties such as flinching and trigger freeze.
On the negative side, muzzle brakes can create additional loud noise and blast debris which can be distracting and dangerous to both the shooter and those around them. Additionally, they can add significant weight to the rifle which can make it more difficult to handle. Also, a brake will change the harmonics on a barrel, which may take you a little time to get used to.
Ultimately, it is up to the shooter to decide if a muzzle brake is right for them and their purposes. If you are considering adding a muzzle brake to your rifle, we recommend consulting with a gunsmith or other firearms expert to ensure that it is installed correctly and will work well with your particular setup.
Watch a video about the effect of the muzzle brake on accuracy: